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| Description: A perfectly normal space is a topological space. (Contributed by Mario Carneiro, 26-Aug-2015.) | 
| Ref | Expression | 
|---|---|
| pnrmtop | ⊢ (𝐽 ∈ PNrm → 𝐽 ∈ Top) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | pnrmnrm 23348 | . 2 ⊢ (𝐽 ∈ PNrm → 𝐽 ∈ Nrm) | |
| 2 | nrmtop 23344 | . 2 ⊢ (𝐽 ∈ Nrm → 𝐽 ∈ Top) | |
| 3 | 1, 2 | syl 17 | 1 ⊢ (𝐽 ∈ PNrm → 𝐽 ∈ Top) | 
| Colors of variables: wff setvar class | 
| Syntax hints: → wi 4 ∈ wcel 2108 Topctop 22899 Nrmcnrm 23318 PNrmcpnrm 23320 | 
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-ext 2708 | 
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1543 df-fal 1553 df-ex 1780 df-sb 2065 df-clab 2715 df-cleq 2729 df-clel 2816 df-ral 3062 df-rex 3071 df-rab 3437 df-v 3482 df-dif 3954 df-un 3956 df-in 3958 df-ss 3968 df-nul 4334 df-if 4526 df-sn 4627 df-pr 4629 df-op 4633 df-uni 4908 df-br 5144 df-opab 5206 df-mpt 5226 df-cnv 5693 df-dm 5695 df-rn 5696 df-iota 6514 df-fv 6569 df-ov 7434 df-nrm 23325 df-pnrm 23327 | 
| This theorem is referenced by: pnrmopn 23351 | 
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